408 lines
10 KiB
Go
408 lines
10 KiB
Go
// Copyright 2015 Prometheus Team
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package notify
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import (
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"fmt"
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"reflect"
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"testing"
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"time"
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"github.com/prometheus/common/model"
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"golang.org/x/net/context"
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"github.com/prometheus/alertmanager/provider"
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"github.com/prometheus/alertmanager/types"
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)
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type recordNotifier struct {
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ctx context.Context
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alerts []*types.Alert
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}
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func (n *recordNotifier) Notify(ctx context.Context, as ...*types.Alert) error {
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n.ctx = ctx
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n.alerts = append(n.alerts, as...)
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return nil
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}
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type failNotifier struct{}
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func (n *failNotifier) Notify(ctx context.Context, as ...*types.Alert) error {
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return fmt.Errorf("some error")
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}
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func TestDedupingNotifierHasUpdate(t *testing.T) {
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var (
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n = &DedupingNotifier{}
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now = time.Now()
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interval = 100 * time.Minute
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)
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cases := []struct {
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inAlert *types.Alert
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inNotifyInfo *types.NotifyInfo
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result bool
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}{
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// A new alert about which there's no previous notification information.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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},
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},
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inNotifyInfo: nil,
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result: true,
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},
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// A new alert about which there's no previous notification information.
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// It is already resolved, so there's no use in sending a notification.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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EndsAt: now,
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},
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},
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inNotifyInfo: nil,
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result: false,
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},
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// An alert that has been firing is now resolved for the first time.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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EndsAt: now,
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},
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},
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inNotifyInfo: &types.NotifyInfo{
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Alert: model.LabelSet{"alertname": "a"}.Fingerprint(),
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Resolved: false,
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Timestamp: now.Add(-time.Minute),
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},
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result: true,
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},
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// A resolved alert for which we have already sent a resolved notification.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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EndsAt: now,
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},
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},
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inNotifyInfo: &types.NotifyInfo{
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Alert: model.LabelSet{"alertname": "a"}.Fingerprint(),
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Resolved: true,
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Timestamp: now.Add(-time.Minute),
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},
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result: false,
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},
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// An alert that was resolved last time but is now firing again.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-3 * time.Minute),
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},
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},
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inNotifyInfo: &types.NotifyInfo{
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Alert: model.LabelSet{"alertname": "a"}.Fingerprint(),
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Resolved: true,
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Timestamp: now.Add(-4 * time.Minute),
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},
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result: true,
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},
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// A firing alert about which we already notified. The last notification
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// is less than the repeat interval ago.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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},
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},
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inNotifyInfo: &types.NotifyInfo{
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Alert: model.LabelSet{"alertname": "a"}.Fingerprint(),
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Resolved: false,
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Timestamp: now.Add(-15 * time.Minute),
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},
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result: false,
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},
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// A firing alert about which we already notified. The last notification
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// is more than the repeat interval ago.
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{
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inAlert: &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "a"},
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StartsAt: now.Add(-10 * time.Minute),
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},
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},
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inNotifyInfo: &types.NotifyInfo{
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Alert: model.LabelSet{"alertname": "a"}.Fingerprint(),
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Resolved: false,
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Timestamp: now.Add(-115 * time.Minute),
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},
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result: true,
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},
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}
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for i, c := range cases {
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if n.hasUpdate(c.inAlert, c.inNotifyInfo, now, interval) != c.result {
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t.Errorf("unexpected hasUpdates result for case %d", i)
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}
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}
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}
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func TestDedupingNotifier(t *testing.T) {
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var (
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record = &recordNotifier{}
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notifies = provider.NewMemNotifies(provider.NewMemData())
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deduper = Dedup(notifies, record)
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ctx = context.Background()
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)
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now := time.Now()
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ctx = WithReceiver(ctx, "name")
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ctx = WithRepeatInterval(ctx, time.Duration(100*time.Minute))
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ctx = WithNow(ctx, now)
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alerts := []*types.Alert{
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{
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "0"},
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},
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}, {
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Alert: model.Alert{
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Labels: model.LabelSet{"alertname": "1"},
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EndsAt: now.Add(-5 * time.Minute),
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},
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},
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}
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// Set an initial NotifyInfo to ensure that on notification failure
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// nothing changes.
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nsBefore := []*types.NotifyInfo{
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nil,
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{
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Alert: alerts[1].Fingerprint(),
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Receiver: "name",
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Resolved: false,
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Timestamp: now.Add(-10 * time.Minute),
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},
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}
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if err := notifies.Set(nsBefore...); err != nil {
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t.Fatalf("Setting notifies failed: %s", err)
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}
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deduper.notifier = &failNotifier{}
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if err := deduper.Notify(ctx, alerts...); err == nil {
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t.Fatalf("Fail notifier did not fail")
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}
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// After a failing notify the notifies data must be unchanged.
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nsCur, err := notifies.Get("name", alerts[0].Fingerprint(), alerts[1].Fingerprint())
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if err != nil {
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t.Fatalf("Error getting notify info: %s", err)
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}
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if !reflect.DeepEqual(nsBefore, nsCur) {
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t.Fatalf("Notify info data has changed unexpectedly")
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}
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deduper.notifier = record
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if err := deduper.Notify(ctx, alerts...); err != nil {
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t.Fatalf("Notify failed: %s", err)
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}
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if !reflect.DeepEqual(record.alerts, alerts) {
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t.Fatalf("Expected alerts %v, got %v", alerts, record.alerts)
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}
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nsCur, err = notifies.Get("name", alerts[0].Fingerprint(), alerts[1].Fingerprint())
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if err != nil {
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t.Fatalf("Error getting notifies: %s", err)
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}
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nsAfter := []*types.NotifyInfo{
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{
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Alert: alerts[0].Fingerprint(),
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Receiver: "name",
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Resolved: false,
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Timestamp: now,
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},
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{
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Alert: alerts[1].Fingerprint(),
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Receiver: "name",
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Resolved: true,
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Timestamp: now,
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},
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}
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for i, after := range nsAfter {
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cur := nsCur[i]
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// Hack correct timestamps back in if they are sane.
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if cur != nil && after.Timestamp.IsZero() {
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if cur.Timestamp.Before(now) {
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t.Fatalf("Wrong timestamp for notify %v", cur)
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}
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after.Timestamp = cur.Timestamp
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}
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if !reflect.DeepEqual(after, cur) {
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t.Errorf("Unexpected notifies, expected: %v, got: %v", after, cur)
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}
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}
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}
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func TestRoutedNotifier(t *testing.T) {
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router := Router{
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"1": &recordNotifier{},
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"2": &recordNotifier{},
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"3": &recordNotifier{},
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}
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for _, route := range []string{"3", "2", "1"} {
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var (
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ctx = WithReceiver(context.Background(), route)
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alert = &types.Alert{
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Alert: model.Alert{
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Labels: model.LabelSet{"route": model.LabelValue(route)},
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},
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}
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)
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err := router.Notify(ctx, alert)
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if err != nil {
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t.Fatal(err)
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}
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rn := router[route].(*recordNotifier)
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if len(rn.alerts) != 1 && alert != rn.alerts[0] {
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t.Fatalf("Expeceted alert %v, got %v", alert, rn.alerts)
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}
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}
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}
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func TestSilenceNotifier(t *testing.T) {
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// Mute all label sets that have a "mute" key.
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muter := types.MuteFunc(func(lset model.LabelSet) bool {
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_, ok := lset["mute"]
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return ok
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})
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marker := types.NewMarker()
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record := &recordNotifier{}
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silenceNotifer := Silence(muter, record, marker)
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in := []model.LabelSet{
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{},
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{"test": "set"},
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{"mute": "me"},
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{"foo": "bar", "test": "set"},
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{"foo": "bar", "mute": "me"},
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{},
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{"not": "muted"},
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}
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out := []model.LabelSet{
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{},
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{"test": "set"},
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{"foo": "bar", "test": "set"},
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{},
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{"not": "muted"},
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}
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var inAlerts []*types.Alert
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for _, lset := range in {
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inAlerts = append(inAlerts, &types.Alert{
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Alert: model.Alert{Labels: lset},
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})
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}
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// Set the second alert als previously silenced. It is expected to have
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// the WasSilenced flag set to true afterwards.
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marker.SetSilenced(inAlerts[1].Fingerprint(), 123)
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if err := silenceNotifer.Notify(nil, inAlerts...); err != nil {
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t.Fatalf("Notifying failed: %s", err)
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}
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var got []model.LabelSet
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for i, a := range record.alerts {
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got = append(got, a.Labels)
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if a.WasSilenced != (i == 1) {
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t.Errorf("Expected WasSilenced to be %v for %d, was %v", i == 1, i, a.WasSilenced)
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}
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}
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if !reflect.DeepEqual(got, out) {
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t.Fatalf("Muting failed, expected: %v\ngot %v", out, got)
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}
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}
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func TestInhibitNotifier(t *testing.T) {
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// Mute all label sets that have a "mute" key.
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muter := types.MuteFunc(func(lset model.LabelSet) bool {
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_, ok := lset["mute"]
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return ok
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})
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marker := types.NewMarker()
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record := &recordNotifier{}
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inhibitNotifer := Inhibit(muter, record, marker)
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in := []model.LabelSet{
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{},
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{"test": "set"},
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{"mute": "me"},
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{"foo": "bar", "test": "set"},
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{"foo": "bar", "mute": "me"},
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{},
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{"not": "muted"},
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}
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out := []model.LabelSet{
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{},
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{"test": "set"},
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{"foo": "bar", "test": "set"},
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{},
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{"not": "muted"},
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}
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var inAlerts []*types.Alert
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for _, lset := range in {
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inAlerts = append(inAlerts, &types.Alert{
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Alert: model.Alert{Labels: lset},
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})
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}
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// Set the second alert as previously inhibited. It is expected to have
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// the WasInhibited flag set to true afterwards.
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marker.SetInhibited(inAlerts[1].Fingerprint(), true)
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if err := inhibitNotifer.Notify(nil, inAlerts...); err != nil {
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t.Fatalf("Notifying failed: %s", err)
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}
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var got []model.LabelSet
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for i, a := range record.alerts {
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got = append(got, a.Labels)
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if a.WasInhibited != (i == 1) {
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t.Errorf("Expected WasInhibited to be %v for %d, was %v", i == 1, i, a.WasInhibited)
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}
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}
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if !reflect.DeepEqual(got, out) {
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t.Fatalf("Muting failed, expected: %v\ngot %v", out, got)
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}
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}
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